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5e1f3b9ebf
Add a NodeTag field to struct Bitmapset. This is free because of alignment considerations on 64-bit hardware. While it adds some space on 32-bit machines, we aren't optimizing for that case anymore. The advantage is that data structures such as Lists of Bitmapsets are now first-class objects to the Node infrastructure, and don't require special-case code to handle. This patch includes removal of one such special case, in indxpath.c: bms_equal_any() can now be replaced by list_member(). There may be more existing code that could be simplified, but I didn't look very hard. We also get to drop the read_write_ignore annotations on a couple of RelOptInfo fields. The outfuncs/readfuncs support is arranged so that nothing changes in the string representation of a Bitmapset field; therefore, this doesn't need a catversion bump. Amit Langote and Tom Lane Discussion: https://postgr.es/m/109089.1668197158@sss.pgh.pa.us |
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